rails 3使用rails_admin建立模型关联模型

时间:2013-07-19 08:37:42

标签: ruby-on-rails ruby-on-rails-3 rails-activerecord

有些人可以通过rails app中的协会帮助我。这是我的模特:

class Catalog < ActiveRecord::Base
    attr_accessible :name
    has_many :parent_catalogs
end


class ParentCatalog < ActiveRecord::Base
    attr_accessible :catalog_id, :name
    has_many :child_catalogs
    belongs_to :catalog
end


class ChildCatalog < ActiveRecord::Base
    attr_accessible :name, :parent_catalog_id
    has_many :products
    belongs_to :parent_catalog
end


class Product < ActiveRecord::Base
  attr_accessible :child_catalog_id, :name
  belongs_to :child_catalog
      # Ex
      rails_admin do
        field :name
        field :child_catalog do
          # How ((
        end
      end
end

问题是:如何使child_catalog字段看起来像: Catalog.name + ParentCatalog.name + ChildCatalog.name 在产品编辑菜单中......

1 个答案:

答案 0 :(得分:0)

将此代码放入ChildCatalog模型

def self.fullname
 self.parent_catelog.catelog.name + self.parent_catelog.name + self.name

end